<template>
  <!--      Home 组件-->
  <!--      <el-button type="info" @click="logout">退出</el-button>-->
  <!-- el-container 页面布局容器-->
  <el-container class="home_container">
    <!-- el-header 头部区域-->
    <el-header>
      <div>
        <img src="../assets/images/heima.png" alt="">
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体区域 -->
    <el-container>
      <!--          侧边栏 -->
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
<!--      <div class='toggle-button'>|||</div>-->
        <!--            侧边栏菜单区域 -->
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409EFF"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          router
          :default-active="activePath">
          <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
            <!-- 一级菜单的模板区域 -->
            <template slot="title">
              <!--                  图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!--                  文本 -->
              <span>{{ item.authName }}</span>
            </template>
            <!--                二级菜单 -->
            <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/' + subItem.path)">
              <template slot="title">
                <!--                  图标 -->
                <i class="el-icon-menu"></i>
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>
            <!--                <el-submenu index="1-3">-->
            <!--                  <template slot="title">选项4</template>-->
            <!--&lt;!&ndash;                  <el-menu-item index="1-3-1">选项1</el-menu-item>&ndash;&gt;-->
            <!--                </el-submenu>-->
          </el-submenu>
        </el-menu>
      </el-aside>
      <!--          右侧区域 -->
      <el-main>
<!--        路由占位符-->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  name: 'home',
  data () {
    return {
      // 左侧菜单数据保存
      menulist: [],
      iconsObj: {
        125: 'iconfont icon-user',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      // 默认不折叠
      isCollapse: false,
      // 被激活的链接地址
      activePath: ''
    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
      // alert('退出成功')
    },
    // 获取所有的菜单
    async getMenuList () {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulist = res.data
      console.log(res)
    },
    // 点击按钮，切换菜单的折叠与展开
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    },
    // 保存连接的激活状态
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>

<style lang="less" scoped>
  .home_container {
    height: 100%;
  }

  .el-header {
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    font-size: 20px;

    > div {
      display: flex;
      align-items: center;

      > span {
        margin-left: 15px;
      }
    }
  }

  .el-header, .el-footer {
    background-color: #373d41;
    color: #fff;
    /*text-align: center;*/
    /*line-height: 60px;*/
  }

  .el-aside {
    background-color: #333744;
    color: #fff;
    /*text-align: center;*/
    line-height: 200px;
    .el-menu{
      border-right: none;
    }
  }

  .el-main {
    background-color: #EAEDF1;
    color: black;
    /*text-align: center;*/
    /*line-height: 160px;*/
  }
  .iconfont {
    margin-right: 10px;
  }
  /* 切换菜单的折叠与展开 */
  .toggle-button {
    background-color: #4A5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em; /* 文字间距 */
    cursor: pointer; /* 鼠标移动进去的效果为小手 */
  }

  /**/
  body > .el-container {
    margin-bottom: 40px;
  }

  .el-container:nth-child(5) .el-aside,
  .el-container:nth-child(6) .el-aside {
    line-height: 260px;
  }

  .el-container:nth-child(7) .el-aside {
    line-height: 320px;
  }
</style>
